The description for --compress-level=NUM does not give any indication
what values are permitted for NUM.
Paul
--- ./rsync.yo.orig 2015-12-30 11:47:24.180646652 +0100
+++ ./rsync.yo 2015-12-30 11:47:27.477198899 +0100
@@ -1907,7 +1907,9 @@
that will not be compressed.
dit(bf(--compress-level=NUM)) Explicitly set the compression level to use
-(see bf(--compress)) instead of letting it default. If NUM is non-zero,
+(see bf(--compress)) instead of letting it default. Allowed values for NUM
+are between 0 and 9; default when bf(--compress) option is specified is 6.
+If NUM is non-zero,
the bf(--compress) option is implied.
dit(bf(--skip-compress=LIST)) Override the list of file suffixes that will
